80MPH is faster. 80 kph or km/h converts to 49.7096954 mph.
What is the important characteristics of the position time graph?
Given a position vs. time graph, all sorts of analyses can be done. The slope through two points on the graph represents the change in position over the change in time, or the velocity. More precisely, this is equal to dx/dt where x models position and t is time. This is known as the derivative of the function.
Moreover, we can take d2x/dt2 (the second derivative) to obtain acceleration, another useful thing to know.
A measurement of 70cc refers to the volume of a cylinder in cubic centimeters, not a speed measurement like miles per hour. To calculate speed in miles per hour (MPH), you would need additional information such as engine power, gearing, and other factors.
Is true that absolute value of speed equals velocity?
No, you've got it backwards. The absolute value of velocity equals speed. Velocity is speed with a direction; speed is just a number, without regard to direction.
How does height change the potential energy of an object?
Potential energy = mass * gravity * height
Ep=mgh
You should know the mass of the object and gravity as 9.81.
So rearranging the formule Ep/mg=h.
Potential energy / (mass * gravity) = height.
How fast is the wind blowing at 35km per hour?
At 35 km per hour, the wind is blowing at approximately 21.74 miles per hour.
Why did one barbell have potential energy while the other did not?
The barbell with potential energy was raised to a certain height, which gave it gravitational potential energy due to its position relative to the ground. The other barbell did not have potential energy because it was resting on the ground and its position did not allow for any stored energy.
What is the kinetic energy of a 60-kg diver falling at 10 ms?
The kinetic energy of the diver can be calculated using the formula: KE = 0.5 * mass * velocity^2. Plugging in the values for the mass (60 kg) and velocity (10 m/s), we get KE = 0.5 * 60 * 10^2 = 3000 J. Thus, the kinetic energy of the 60-kg diver falling at 10 m/s is 3000 Joules.
What is potential and kinetic energy made of?
Potential energy is stored energy that an object has due to its position or condition. Kinetic energy is the energy an object possesses due to its motion. Both forms of energy can be thought of as resulting from the interactions of particles and forces within an object.
Can a body have nonzero average speed but have zero average velocity give example?
Yes, a body can have a nonzero average speed but zero average velocity if it moves around a closed path and returns to its starting point. For example, if a car travels around a circular track at a constant speed, its average speed will be nonzero (as distance is covered), but its average velocity over the entire trip will be zero as the displacement is zero.
How do you measure kinetic energy?
To calculate the kinetic energy, multiply the mass times the velocity squared and divide by 2. (Mass in kilograms, speed in meters/sec, yields energy in joules.)
The equation is
KE= 1/2 (mv2)
Kinetic Energy= one-half (mass times velocity squared)
How can a trucks kinetic energy can be increased without increasing its speed?
Drive alongside it in another vehicle and then move stuff onto the truck. This will increase the mass of the [whole] truck and so increase its KE. This is dangerous so do not try it!
Mph stands for miles per hour, which is a measurement of speed.
What are the effects of potential energy and kinetic energy to 3 states of matter?
Kinetic energy effects changes of state because it is when energy that has been held up inside the object (aka potential energy), is finally released.
For example: On a roller coaster, the cart goes up a hill. At the top of the hill, right before it is about to go down another hill, it has potential energy, or stored up energy. Then whe it is going down the hill, all the energy is released and now the energy is in the form of kinetic.
Another example: A marble is attached onto the end of a string. You pull the marble back. While being held back, the marble has potential energy. When you let the marble go, that energy turns into potential energy, because it is in motion.
Defintions:
Potential energy: Energy that is stored up
Kinetic energy: Energy in motion
Does a baseball flying through the air have kinetic energy because its in motion?
The energy related to the movement is called "kinetic energy". Presumably, the moving baseball would be above ground level, so it would also have gravitational potential energy - assuming you choose to define the ground level as zero.
It depends on air pressure and temperature, or altitude. On a sea level it will be around 9120 mph, on 36000ft it will be 7900 mph.
What happens to an objects kinetic energy as its mass increases?
kinetic energy, K.E = 1/2 mv^2
that is, it is directly proportional to mass, assuming velocity to be constant
and is directly proportional to square of velocity assuming mass to be constant.
What type of energy is kinetic and potential?
Kinetic energy is the energy of motion, possessed by an object in motion. Potential energy is the energy that an object has due to its position or state, such as gravitational potential energy or elastic potential energy.